Sewing-machine hemmer.



No. 691,754. Patented Jan. 28, I902.

A. H. mavoe.

SEWING MACHINE HEMMER.

Application filed Sept. 19, 1898.)-

(No Model.)

I 72012211502" QV/er/H Dame] UNITED STATES PATENT OFFICE.

ALBERT'H. DEV CE, OF CHICAGO, ILLINOIS, ASSIGNOR F ONE-HALF TO A. H.SIMON, OF JEFFERSON COUNTY, KENTUCKY.

SEWING-MACHINE HEMMER.

SPECIFICATION forming part of Letters Patent No. 691,754, dated January28, 1902 Application filed September 19, 1898. Serial No. 691,397- (N'omodel.)

To all whom it may concern: I

Be it known that I, ALBERT H. DEVOE, of Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvementsin Sewing-Machine Hemmers, of which the following is a specification.

My invention relates to improvements in hemmers in which the parts arefree to expand and contract with relation to each other I oautomatically and allow cross-seams and other irregularities to passthrough the hemmer without obstruction. In some of the devices of thisclass heretofore employed the expansion of one part of the device causesthe contraction of another part thereof, which will thus obstruct anddraw the goods out of shape during its passage through the machine.Other devices employ separate parts which yield to the passage of thegoods and are held inplace by separate springs, which do not yieldequally or adequately in all directions for the purposes intended.

The object of my invention is to provide a hemmer in which all the partsare integral or inseparably connected and which will yield equally Wellin any direction in which the pressure is brought withoutcorrespondingly binding or pressing unduly upon other parts of thematerial passing through it; and the in- 0 vention consists,essentially, in a presser-foot cross-seams, folds, or welts through thehem-. mer, while the hem is turned in a perfect man;

ner without stretching the hemmed edge or retarding the passage of thegoods.

In the accompanying drawings, which illustrate my invention, Figure 1 isa perspective view ofmy improved hem mer adapted to the arm of asewing-machine presser-foot; Fig.

e 2, a plan View; Fig. 3, an inverted plan view;

Fig. 4c, a front elevation of said device, and

Fig. 5' a transverse sectional elevation inline :1: w of Fig. 2 lookingrearwardly and upon an enlarged scale to show more clearly the throat ofthe presser-foot of the adjacent ends of the tongue and scroll thereto.

In the device illustrated an arm 1 is adapted to the presser-foot arm ofa sewing-machine and is provided with a forwardly-projecting rectangularplate or presser-foot 2, having a half-circular recess 3 and an adjacentconcaved throat 4, projecting rearwardly upon the under side of andextending to the needle-openin g 5, thus providing two squareendedabutments 6 6?,"one upon each side of the throat, between which thefolded edges and seams of the fabric are held and directed properly tothe needle.

A folding-plate 7, of spring-steel, is fixedly secured at itsrectangular rear end to the corresponding upper surface of thepresser-foot 2 and is provided with a needle-opening located over thecorresponding opening 5 of the foot and is inclined upwardly andforwardly at 8 and bifurcated at 9, the two branching members 10 and 11being bowed and extended forwardly, laterally, and in- .wardly, theinnermost end 12' of themember 10 being fixed to, secured to, or madeintegral with a rectangular bar 13, located longitudinally at one sideof the foot 2 and coincidently with the adjacent abutment-plate 6.

The forward end and inner face of the bar 13 is made integral with oraffixed to the forl ward end of a scroll 14, which projects rearwardlyand extends within and to the middle part of the throat 4 of thepresser-foot,

being thus held free to yield freely upon and with the flexible member10 of the spring folding-plate in any required direction. The innermostforward end 10 of the member '11 is fixedly secured to the forward, endof a tongue or coned pin 15, which projects rearwardly andaxially'within the scroll 14 to apoint slightly Within the throat 4 ofthe presser-foot, and the outer end 11 of the said member 11 projectsrearwardly upon one side I of the presser-foot longitudinally andcoincidently with the adjacent'abutment-plate 1 6 thereof, the saidpresser-foot being thus provided with yielding longitudinal and parallelside extensions, which serve to-hold the fabric down evenly upon eachside of the hem while its free ends are being turned and folded onewithin the other, and thus properly directed to the throat and needle tobe stitched together, the scroll, tongue, and throat making aperfectfold under all conditions.

All the parts above described are overhung and supported from aspring-steel plate and are adapted to yield freely in any direction toadmit of the unobstructed passage of crossseams, welts, or excessivethickness of material and also allow either heavy orlight fabrics to bepassed through the hem mer and properly operated upon.

The foot maybe attachedin asuitable manner to the bed-plate of thesewing-machine instead of to the presser-foot arm, and. certain otherdetails of construction may be varied without departing from myinvention.

The hemmer herein described and claimed is made in such a form as tocarry either thin flimsy material or extra heavy harsh or stilfmaterial, the spring-plates adapting themselves automatically to thetension required for the different materials. As mentioned above, as theplates recede to allow heavy material to pass through they increasealsoin tension sulficiently for such heavy material, thus providingsufiicienttension for any grade of material and no more.

I claim as my invention and desire to secure by Letters Patent 1: Thepresser-foot, provided with the scroll, combined with the spring,attached to said foot and having at its free end the presser part,provided with the rigid tongue.

2. A hemmer presser-foot provided with a turning-scroll and with apresser part ormember yieldingly mounted relative to said foot and,rearward of said yieldingly-mounted presser part or member, a tonguewhich of itself is rigid but which is yieldingly mounted, said tongueextending within and cooperating with said scroll.

3. In a hemmer, a foot havingathroat upon the under side thereof incombination with a spring-plate having branching arms, one of said armssupporting a longitudinal bar in the form of an extension from theabutment upon one side of said throat, and ascroll affixed to one ofsaid arms and a tongue aifixed to the other of said arms locatedaxiallywithin the scroll and an extension fromv said arm extending fromthe opposite. throat-abutment parallel to thesaid longitudinal bar, tohold the hem of the material between them while being folded,substantially as described.

In testimony that I claim the foregoing as my invention 1 have signed myname in the presenceof two subscribing witnesses.

ALBERT I-I. DEVOE.

Witnesses:

WILLIAM H. ROWE, H. I. LAHR.

